16 Channels Relay Module for ESP32 IOT Development Board

SKU: K8-6-ESP32-16R
Out of stock
EGP 1,300.000 exc. vat
Out of stock
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16 Channels Relay Module for ESP32 IOT Development Board 5V


  • Product Name: 16-Channel Relay Module board
  • Number of Channels: 16
  • Control Signal voltage: 5V
  • Load Voltage: AC 250V/10A, AC 125V/15A DC 30V 10A
  • Input power: 5V , 16 channels optically isolated.
  • Standard interface that can be controlled directly by ESP32 with Indication LED’s for each Relay output status. Independent common end COM makes the relay convenient for users to access different signals. Use optocoupler protection with high safety performance Widely used for all MCU control, industrial sector, PLC control, smart home control.
  • Dimensions : 166mm X 134mm


16 Channels Relay Module for ESP32 IOT Development Board

Product Description:

Introducing our 16-Channel Relay Board for ESP32, designed specifically for smart home and IoT control DIY projects. This compact and powerful board features 16 mini automotive relays, each capable of handling up to 5A at 250VAC or 20A at 14VDC, driven by the reliable ULN2803 transistor array chip. Each relay is connected to 3-pin KF350 terminals (3.5mm), with LED indicators and printed ESP pin labels for easy identification and programming. The board can be powered with a 12V DC supply and includes a user-defined general-purpose switch and two customizable LEDs. Compatible with popular open-source IoT platforms like Blynk, Cayenne, and RemoteXY, and programmable using the Arduino IDE.


  • 16-Channel Relay Control: Each relay can handle up to 5A at 250VAC or 20A at 14VDC.
  • Compact Design: Palm-sized PCB with 3-pin KF350 terminals for each relay.
  • ULN2803 Transistor Array: Efficiently drives all 16 relays.
  • LED Indicators: Each relay has an LED indicator for visual status confirmation.
  • ESP Pin Labels: Printed labels for quick and easy identification of ESP32 pin connections.
  • 12V DC Power Supply: Single power source for the entire board.
  • User-Defined General-Purpose Switch and LEDs: Customizable for various applications.
  • IoT Platform Compatibility: Supports Blynk, Cadio, RemoteXY, and other open-source platforms.
  • Arduino IDE Programmable: Easily create and upload custom programs using the Arduino IDE.

Technical Specifications:

  • Controller: ESP32 (30-pin)
  • Relays: 16 mini automotive relays
    • Max Load: 5A at 250VAC or 20A at 14VDC
  • Driver Chip: ULN2803 transistor array
  • Terminals: 3-pin KF350 type (3.5mm)
  • Power Supply: 12V DC
  • Indicators: LED for each relay
  • Customizable Components: General-purpose switch and two LEDs


  • Smart home automation
  • IoT control systems
  • DIY electronics projects
  • Remote control of appliances
  • Educational tools for learning IoT and home automation

What’s Included:

  • 16-Channel Relay Board for ESP32 (ESP32 board sold alone)

Usage Guide:

  1. Powering the Board:
    • Connect a 12V DC power supply to the board.
  2. Connecting the ESP32:
    • Insert the ESP32 (30-pin) module into the designated slot on the board.
    • Refer to the printed labels for accurate pin connections.
  3. Relay Connections:
    • Use the 3-pin KF350 terminals to connect the devices you wish to control via relays.
    • Ensure proper wiring and secure connections.
  4. Programming:
    • Open the Arduino IDE and select the appropriate board and port.
    • Write or upload your custom firmware to control the relays.
    • Use libraries and example codes for IoT platforms like Blynk, Cayenne, and RemoteXY to simplify integration.
  5. Customizing Switch and LEDs:
    • Utilize the user-defined switch and two LEDs for additional functionality.
    • Configure these components in your code as needed.
  6. Monitoring and Control:
    • Use the LED indicators to verify relay status.
    • Control the relays remotely via your chosen IoT platform.

Order your 16-Channel Relay Board for ESP32 today and elevate your smart home and IoT projects with this versatile and powerful relay control solution!

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Additional information

Weight 265 kg
Dimensions 166 × 134 × 25 cm
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UGE Electronics

UGE Electronics
UGE Electronics


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16 Channels Relay Module for ESP32 IOT Development Board EGP 1,300.000 exc. vat
Out of stock